LTM2886CY-3I#PBF

Overview

The LTM2886CY-3I#PBF is a high-efficiency isolated DC/DC module from Analog Devices, featuring the LTC3864 controller and integrated power stage. It provides a fixed 3.3V output with up to 15A continuous current capability. The device operates from input voltages between 3.6V and 30V, delivering an isolation voltage of 1.5kVrms. Key electrical parameters include a switching frequency of 500kHz, efficiency exceeding 90% at typical loads, and a programmable soft-start time. It supports remote sense for precise load regulation and includes comprehensive protection features such as over-current, over-temperature, and short-circuit protection within a compact 22mm x 22mm BGA package.

Feature Summary

• Integrated isolated power module combining controller, transformer, and MOSFETs in a single BGA package
• High efficiency design optimized for space-constrained applications requiring galvanic isolation
• Programmable output voltage range and soft-start functionality for flexible system integration
• Built-in protection mechanisms including thermal shutdown and hiccup mode over-current protection

Applications

• Industrial automation systems requiring isolated power rails
• Medical equipment needing certified galvanic isolation
• Telecommunications infrastructure with strict size constraints
• Test and measurement instruments demanding stable isolated supplies

Procurement Notes

Verify the specific suffix 'CY-3I#PBF' matches your required operating temperature range (-40°C to +85°C) and pinout configuration. Confirm that the 3.3V fixed output aligns with your load requirements. Ensure the 1.5kVrms isolation rating meets your safety standards compliance needs. Check for any recent revisions to the datasheet regarding thermal pad connections or layout recommendations to guarantee optimal performance and reliability in your final design.

Selection Notes

Select this component when a compact, high-current isolated solution is needed without external magnetics. Consider the 15A output capability against your peak load demands. Evaluate the 500kHz switching frequency for EMI filtering requirements. Compare the BGA package footprint against available PCB real estate. Assess the need for remote sensing if long trace lengths are involved. Verify input voltage compatibility with your main power bus before committing to this specific model.

Part Context

This part belongs to the Linear Technology (now Analog Devices) LTM28xx family of isolated DC/DC modules. These modules integrate the power stage, control IC, and transformer into a single surface-mount package. The LTM2886 specifically targets applications requiring higher current outputs compared to earlier generations. It replaces discrete solutions involving separate controllers and transformers, simplifying design and reducing board space. The '#PBF' designation indicates lead-free packaging compliant with RoHS standards.

Replacement Considerations

Direct replacements may include other LTM28xx series variants with different output voltages or current ratings, such as the LTM2885 or LTM2887, depending on specific voltage and amperage needs. Cross-reference pinouts and thermal characteristics carefully. No direct equivalent exists outside the LTM28xx family due to the unique integrated transformer design. Consult Analog Devices for updated substitution lists if discontinuation occurs.